Lab rat
Subject and lab rat are semantically related. in experimental subject topic. In some cases you can use "Subject" instead a noun phrase "Lab rat".
Subject
Subject noun - A major object of interest or concern (as in a discussion or artistic composition).
Mutual synonyms
Both terms in one sentence
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Got Volunteered: The Lab Rat comic reveals that Chell was initially disqualified as a test subject due to her personality profile.
Source: Videogame / Portal 2 - The Lab Rat tie-in comic makes this explicit; she was initially disqualified as a potential test subject due to nearly pathological tenacity (99th-plus percentile).
Source: Videogame / Portal 2 -
Lab Rat, a comic tying together Portal and Portal 2, goes slightly out of its way to preserve this: the page of her personnel file where she's asked a question reports "Subject refused to answer."
Cite this Source
Subject and Lab rat. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/lab_rat/subject
Lab rat & Subject. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/lab_rat/subject>.
Subject or Lab rat. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/lab_rat/subject.
Google Ngram Viewer shows how "lab rat" and "subject" have occurred on timeline